For your consideration:
Nice used billet Hydraulic Roller Cam ground by Comp cams:
3311/3311 lobes on intake and exhaust
206 duration @.050 on intake and exhaust
.480 lift with 1.5 rockers
109 degrees LSA
All the oddfire cam nose parts needed for installation:
Thrust plate
Thrust bearing...
Those drill marks are on all stock 86-87 pistons. They will be toward the front side of each piston.
Run a leakdown test. It will tell you WHERE the pressure is escaping the cylinder.
I'm betting on Head Gaskets not rings. That can be fixed w/o pulling the engine as long as you don't have...
Buick Motorsports Manual
Out of print, hard to find, Full of great information about Stock and Stage1/Stage 2 engines.
IMG_20230202_133444605.jpg
$50 plus shipping
One original equipment 1986-87-88 GM ignition module and aftermarket oil pack (Borg Warner I believe). I tested this assembly using a Casper's tester.
Sure, you can get aftermarket modules.......Even AC Delco makes one these days............but are they really as good as the OEM modules...
I respectfully disagree with your statement. Yes, it turns at half crank speed, but there is a load on the unit that you did not consider. This part drives the oil pump. That load causes wear on the gear and the bushings.
This load increases dramatically when using a High Volume front cover...
Thanks for posting this Chuck!
I have built alot of these V6 engines over the years and I've learned from experience exactly what Chuck describes in his write up.
If the customer supplies new injectors for the engine build, I don't flow test them (maybe I should). If the customer supplies...
Here is an article I wrote that describes the procedure to check and set the cam sensor on 84-85 and 86-87-88 Turbo Buick engines
Cam Sensor Diagnostics and timing procedure
One new set of 3.830 Wiesco forged pistons and Speed Pro rings. This set is missing just one piston pin.......IDK wtf happened to one pin!!!
A complete set of new pins will cost you $90. My screw up is your bargain. $400 plus shipping
IMG_20230127_140737535.jpg
IMG_20230127_140822895.jpg...
I have three cam sensors to sell. These come from my personal collection of TR parts that I've accumulated since I bought my first TR back in 1985. The cap/sensors are still available from aftermarket suppliers. The complete cam sensor assembly is discontinued from GM and no one is reproducing...